Issues

• APH: start from an xbar file (--init-Xbar-fname)

  Pyomo/mpi-sppy#931 · Filter by author DLWoodruff opened on Oct 21, 2026

• Lint: bugbear (B) rules by hand, and revisiting ruff format

  Pyomo/mpi-sppy#923 · Filter by author DLWoodruff opened on Oct 19, 2026

• Verify rho

  Pyomo/mpi-sppy#911 · Filter by author bknueven opened on Oct 16, 2026
  

• APH with --display-convergence-detail changes W

  Pyomo/mpi-sppy#910 · Filter by author DLWoodruff opened on Oct 16, 2026

• After #904 merges: make "Checkpoint/resume tests" a required check on main

  Pyomo/mpi-sppy#907 · Filter by author DLWoodruff opened on Oct 9, 2026

• Checkpointing: make spoke writes cheaper when only the cursor moved

  Pyomo/mpi-sppy#906 · Filter by author DLWoodruff opened on Oct 9, 2026
  1

• Checkpointing: carry WOscillationMonitor and CrossScenarioExtension state across a resume

  Pyomo/mpi-sppy#903 · Filter by author DLWoodruff opened on Oct 9, 2026

• out-of-the-box: say what to do when it refuses an EF on several ranks

  Pyomo/mpi-sppy#902 · Filter by author DLWoodruff opened on Oct 7, 2026
  1

• --user-defined-extensions cannot load an extension

  Pyomo/mpi-sppy#895 · Filter by author DLWoodruff opened on Oct 3, 2026

• XhatSpecificInnerBound never sends its inner bound to the hub

  Pyomo/mpi-sppy#891 · Filter by author DLWoodruff opened on Sep 30, 2026

• Checkpointing: resume automatically when --checkpoint-dir already holds a checkpoint

  Pyomo/mpi-sppy#890 · Filter by author DLWoodruff opened on Sep 29, 2026

• Rho that differs across scenarios at a node is not checked, and makes the Lagrangian bound unreliable

  Pyomo/mpi-sppy#887 · Filter by author DLWoodruff opened on Sep 22, 2026

• Store / write multiple optimal solutions

  Pyomo/mpi-sppy#885 · Filter by author bknueven opened on Sep 21, 2026

• --xhat-from-file publishes NaN nonant values in BEST_XHAT

  Pyomo/mpi-sppy#884 · Filter by author DLWoodruff opened on Sep 21, 2026

• Why have --EF-solver-name and --solver-name in generic cylinders?

  Pyomo/mpi-sppy#883 · Filter by author bknueven opened on Sep 21, 2026
  1

• test_xhatshuffle_coverage is flaky: IndexError when the xhatshuffle spoke records fewer than two solves

  Pyomo/mpi-sppy#881 · Filter by author DLWoodruff opened on Sep 21, 2026

• Assess performance of Bender's for large-scale models

  Pyomo/mpi-sppy#880 · Filter by author bknueven opened on Sep 21, 2026
  1

  

• Improve solver dual sign convention in mpisppy/utils/lshaped_cuts.py

  Pyomo/mpi-sppy#879 · Filter by author bknueven opened on Sep 21, 2026
  

• --grad-rho with --ph-xfeas-spoke: GradRho on the spoke never registers best_xhat_buf

  Pyomo/mpi-sppy#876 · Filter by author DLWoodruff opened on Sep 20, 2026

• --lagrangian with --relaxed-ph or --ph-dual aborts: More than one cylinder to select from for DUALS

  Pyomo/mpi-sppy#875 · Filter by author DLWoodruff opened on Sep 20, 2026
  1

• Helper thread to serve window reads during solves (Windows MPI stall, #869)

  Pyomo/mpi-sppy#871 · Filter by author DLWoodruff opened on Sep 18, 2026
  1

• mpi-sppy-one-sided-test fails under MS-MPI on Windows, though mpi-sppy runs

  Pyomo/mpi-sppy#869 · Filter by author DLWoodruff opened on Sep 18, 2026
  1

• Interrupt in-flight spoke solves when the kill signal arrives (design tabled)

  Pyomo/mpi-sppy#860 · Filter by author DLWoodruff opened on Sep 15, 2026

• APH can still hang instead of aborting: listener_util's threads defeat the exit-time MPI_Abort

  Pyomo/mpi-sppy#853 · Filter by author DLWoodruff opened on Sep 6, 2026
  

• PH extensions are not safe across a second ph_main() on the same object

  Pyomo/mpi-sppy#848 · Filter by author DLWoodruff opened on Aug 25, 2026